Araucarioxylon arizonicum is estimated to have grown more than 150 feet high and dominated the tropical forests in what is now Arizona nearly 225 million years ago. The reds and oranges come from hematite inclusions within the silica, the yellows from limonite and the purples from magnesium based minerals. The petrified wood of this tree is frequently referred to as "Rainbow wood" because of the large variety of colors some specimens exhibit. The petrified wood from the extinct conifer Araucarioxylon arizonicum which happens to be the state fossil of Arizona.
The petrified forest encompasses nearly 100k acres and this wood comes from land outside of the park. This is similar to petrified wood which is found in the Petrified Forest National Park. For example pinks and reds are due to hematite, a form of oxidized iron. The petrified wood we carry is collected from private ranches in the area of Holdbrook, Arizona.The vibrant coloration is due to the contaminating minerals in the silica which replaced the original wood structure.
The entire forest expends over nearly 100k acres with only about 5% being located within the park. No, it is illegal to collect or remove petrified wood from within the National Park. The bookends have been polished on the outer face and have deep red, orange, purple and black hues. Reference: ĭoes Your Petrified Wood Come From The Petrified Wood National Park? 8.4' Tall, Arizona Petrified Wood Bookends - Rainbow Colored 315 275 5.5' Tall, Arizona Petrified Wood Bookends - Arizona This is a gorgeous pair of bookends made from Late Triassic age, Arizona petrified wood. At least nine species of fossil trees from the park have been identified, all extinct as well as other plants including lycopods, ferns, cycads and ginkgoes. Petrified Wood Bookends (Arizona) 325.00. In cross-sectional view, it is recognized by its numerous thin veins radiating outward from the central core. Our bookend offerings include: petrified wood, geodes, agate, fossils and a variety of other stones. Its classification in relation to other members of the plant Kingdom is uncertain. Schilderia adamanica - One of the rarer woods in the petrified forest. In cross-section view these scars usually appear as white veins radiating outward from the central core of the tree. It is characterized by circular small scars on the outer surface of the tree rounds. Woodworthia arizonica - The second most common species in the petrified forest. All of the rainbow wood is of this species. It is the state fossil of Arizona and is related to the monkey puzzle tree living today. What Species Of Wood Are Found In The Arizona Petrified Forest?Īraucarioxylon arizonicum - 95%+ of the fossilized wood found in the Arizona petrified forest is from Araucarioxylon arizonicum a type of conifer that could grow up to 200 feet tall. These petrified logs became buried under thousands of sediment over time but uplift and erosion eventually re-exposed them at the surface where they are found today. Other minerals such as iron oxides also were deposited along with the silica providing the color.
It crystallized within the cellular structure, replacing the organic material. Minerals, including silica dissolved from volcanic ash, absorbed into the porous wood over hundreds and thousands of years. Downed trees that accumulated in river floodplains and channels were periodically buried by floods carrying fine, volcanic ash.īecause of the rapid burial and lack of oxygen the wood did not decay as it would if it was on the surface. The area had a tropical climate and a vast forest grew upon a relatively flat-lying terrain. The forest originally formed in the Upper Triassic, about 225 million years ago in the Northwest area of the supercontinent Pangaea.
0 kommentar(er)
